Roll back issues with adaptive cruise control.

[GolfVII]

ACC does stop you regardless if auto hold is engaged or not in a DSG. I have not had roll back issues in my TDI. I have noticed on my car the breaks don't disengage until the car wants take off not before.

The only time I had a sketchy moments was when I was coming up to a stationary car and the radar did not see it and another time doing 100 and some bright spark pulled in to my lane doing around 40. Some people do not know how to drive on free-ways.

Any concerns I have had with my car I went back to the dealer and they have fixed it no questions asked, your issue sounds like a safety concern so taking it back to the dealer to inspect should be your first stop.

[AdamD]

Hill hold will apply the amount of pressure registered when first operated and continue to maintain that brake pressure continuously every time it activates.

Actually, I believe that the hill hold assist will apply only the amount of brake pressure that was applied at the moment the car comes to a standstill (which is different for each and every stop). If the ACC is only applying gentle braking force (and less force will be required if the car is decelerating uphill), then that amount of brake pressure may initially be insufficient to hold the car on the slope - hence the initial rollback (followed by an emergency reaction from the car when it realises it's moving backward).

[lambertia]

Actually, I believe that the hill hold assist will apply only the amount of brake pressure that was applied at the moment the car comes to a standstill (which is different for each and every stop). If the ACC is only applying gentle braking force (and less force will be required if the car is decelerating uphill), then that amount of brake pressure may initially be insufficient to hold the car on the slope - hence the initial rollback (followed by an emergency reaction from the car when it realises it's moving backward).

That is a very good theory.

[lambertia]

Are you sure ACC is supposed to actually stop the car?

I've tried it twice (coincidentally on Punt Rd) and I know for certain I'd have run into the car in front if I didn't brake at the last second myself.

Manual GTI here.


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The manual clearly states that the ACC cannot detect stationary traffic. It will stop you if the car in front slows down and stops. Change the mfd to assist display and see what it's doing.

[agentthumb]

The manual clearly states that the ACC cannot detect stationary traffic. It will stop you if the car in front slows down and stops. Change the mfd to assist display and see what it's doing.

I'm also fairly certain the feature to sop the car isn't present on Manuals. Only available on DSGs.

Cuts out at 30km/h due to the system's inability to operate the clutch in a manual car to stop it from stalling. Also, bringing the car to a stop from 60kmh in 5th gear could be interesting

Automatic Distance Control ACC < Technical Glossary < Innovation & Technology

[pepito]

I'm also fairly certain the feature to sop the car isn't present on Manuals. Only available on DSGs.

Cuts out at 30km/h due to the system's inability to operate the clutch in a manual car to stop it from stalling.

That's a shame. I'd be quite happy to work the clutch if the car wanted to stop for me

[Baz 55]

When using ACC in slow moving and stop start traffic, which btw is on of the best features of ACC I turn off the motor cut out and take off auto hold. Works much better, no jerky stop start. Doesn't seem to roll either.
One interesting point is that sometimes the car will come to a full stop in traffic and then start automatically when the traffic starts to move, other times I have to tap the gas pedal.